Signor to frederick siemens and alexander siemens



(No Model.) 3 Sheets-Sheet 1.

W. FOULIS. RBGENBRATIVE GAS RETORT FURNACE.

No. 418,314. Patented Dec. 81, 1889.

N. FETERS. Phcio-Lmwkmphar. Walhingtun. D. C.

(No Model.) 3 S heets--Sheet 2. W. POULIS. REGENERATIVE GAS RETORT FURNACE.

Patented Dec. 31, 1889.

l/ll II/l I/1/ //I //I/ Ill/ll N. PETERS. Phnmumogmphur. Wuhinglnn. I! C.

3 Sheets-Sheet 3.

(No Model.)

W. FOULIS. REGENERATIVE GAS RETORT FURNACE. No.- 418,314.

Patented Dec. 31, 1889.

N. PETERS, Pnmum m hm, wmin iw l1 c1 .the point where the gas enters it.

UNITED STATES PATENT. OFFICE.

SIGNOR TO FREDERICK SIEME LONDON, ENGLAND.

NS AND ALEXANDER SIEMENS, OF

REG EN ERATIVE GAS-RETORT FURNACE.

SPECIFICATION forming part of Letters Patent No. 418,314, dated December 31, 1889. Application filed February 3, 1888. Serial No. 262,9 l8. (No model.) Patented in England June 19, 1886, No. 8,157.

To all whom itmay concern.-

Be it knowrt' that I, IVILLIAM FOULIS, engineer, of 42 Virginia Street, Glasgow, in the county of Lanarlr, Scotland, have inventedan Improvement in Regenerative Gas Retort Furnaces, (for which Letters Patent have been granted in Great Britain, No. 8,157, and dated June 19, 1886,) of which the following is a specification.

In regenerative gas-retort furnaces as they are at present arranged combustible gas produced by partial combustion of fuel in a gasproducer enters the combustion -chamber, where it meets and burns with air heated by its passage through fines arranged side by side with those which carry off the waste products of combustion.

Usually the gas enters the combustionchamber in a horizontal direction and the hot air rises vertically to meet it, so that the main heat of the combustion is directed immediately upon the structure above, causing rapid deterioration of the structure and producing deposits and incrustations which seriously interfere with the free passage of the gases and render necessary frequent stoppage and repairs.

The object of the present invention is to remedy this evil in such furnaces, which is of fected in the following manner. The hot-air fiues, instead of opening vertically into thecombustion-chamber, are continued beyond They are then directed upward to about the level of the combustion-chamber and open with with ened months into the flame-chamber, where the air meets the gas and enters into combustion with it. The gas and hot air being thus made to meet 011 the same level as they are moving horizontally, the flame, instead of being directed upward, impinging on the structure above, and causing intense local heat, sweeps freely along the flame-chamber, delivering its heat uniformly over the furnace without such local intensity as can ,damage the structure. It is found, moreover, that by thus permitting the flame to take a free course, impinging as little as possible on any solid obstacle, more perfect combustion and complete evolution of heat are secured.

The accompanying drawings are vertical sections showing this invention applied to a regenerative gas-retort furnace, these sections being taken on different planes, as follows:

Figure .1, in its left half, is a section on A B, and in its right half on O I) E F, of Fig 2, which on its left half is a section on GH I K L M N O and on its right GH I KP O of Fig. 1. Fig. 3 is a section on Q R of Fig. 1, and Fig. 4 is a section on S T of Fig. 2.

The gas generated in the producer a-passes by the fines 1) into the combustion-chamber c, where it meets with the supply of heated air and burns. As indicated by the arrows,

.the flame, which is mainly developed in the chamber 0, and the products of combustion circulate between and around the retorts d, and then the products descend along the zigzag channels 6 to the flues f, whence they pass to the chimney-shaft. The air entering at g ascends the zigzag channels h, which are arranged between the channels 6, and separated from them by thin partitions, so that the air in its ascent along the channels it becomes heated. The-uppermost channel. It is extended beyond the mouth of the gas-fiue b, and an uptake from its end expands, as shown in Fig. 4, to a wide mouth 75, opening into the combustion-chamber c at or about the same level with the gas-flue 12. Thus the heated air directed across the stream. of gas mingles with it, supporting combustion and producing a gentle flow of flame along the chamber c, (indicated by the arrows Z,) the flame and products thence diffusing themselves among the retorts.

Instead of a single mouth to the gas-flue b and to the air-supply it, there may obviously be several months, so as to subdivide the gas and air into several streams directed either obliquely across or parallel to one another, so as to produce a flame traveling horizontally along the combustion-chamber c.

In a regenerative gasfurnace, a comb ustionchamber, the walls thereof provided with horizontalv air-passages and. horizontal gasnameto this specification in the presence of passagesopening intoxthe said chamber in 1 two subscribing witnesses.- the same horizontal plane, near the bottom thereof, whereby the resultant flame is caused WILLIAM FOULIS. 5 to travel horizontally near the bottom of the WVitnesses:

chamber before rising, as and for the purpose 4 ST. JOHN V. DAY, described. f JOHN 'SIDDLE,

lnztestimony v whereof I have-signed my Bothv'of 115 St. Vincent Street, Glasgow. 

